Narcolepsy : Tests
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Examination and tests are used to rule out disorders that may cause similar symptoms, including sleepiness that results from seizures, sleep apnea, insomnia, restless leg syndrome, other sleep disorders, or other medical, psychiatric, or neurologi...
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If a person has both excessive daytime sleepiness and cataplexy, narcolepsy can be diagnosed on the basis of patient history alone. Lab tests, however, can confirm a diagnosis. Tests at a sleep disorders clinic include an overnight polysomnogram (...
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If a person experiences both excessive daytime sleepiness and cataplexy, a diagnosis may be made on the patient history alone. Laboratory tests, however, can confirm a diagnosis. These may include an overnight polysomnogram—a test in which s...
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Narcolepsy is a complex disorder, and it is not always easy to identify. It takes ten years on average for an individual to be correctly diagnosed. The diagnosis of younger patients is additionally complicated by the fact that children with narcol...
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If a person experiences both excessive daytime sleepiness and cataplexy, a diagnosis may be made on the patient history alone. Laboratory tests, however, can confirm a diagnosis. These may include an overnight polysomnogram—a test in which s...
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If a person experiences both excessive daytime sleepiness and cataplexy, a diagnosis may be made on the patient history alone. Laboratory tests, however, can confirm a diagnosis. These may include an overnight polysomnogram—a test in which s...
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The diagnosisof narcolepsy can be made by a general practitioner familiar with the disorder as well as by a psychiatrist. If a person comes to the doctor with reports of both excessive daytime sleepiness and cataplexy, a diagnosis may be made on t...
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The diagnosis of narcolepsy can be made by a general practitioner familiar with the disorder as well as by a psychiatrist. If a person comes to the doctor with reports of both excessive daytime sleepiness and cataplexy, a diagnosis may be made on ...
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An electroencephalogram (EEG) is a test to detect abnormalities in the electrical activity of the brain.
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Electroencephalography (EEG)Electroencephalography(EEG)is a test that measures your brain wave activity. It is used to assess your brain function.What Is EEG Used For?
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Having an Electroencephalography (EEG)TipsTry to relax and remain still.Avoid talking during the test.You will sit in a reclining chair or lie down on an exam table in a softly lighted room. The technologist will measure certain points on your head.
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Detailed information on electroencephalogram (EEG), including steps that should be taken to prepare your child for the EEG
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An electroencephalogram (EEG), also called a brain wave test, is a diagnostic test which measures the electrical activity of the brain (brain waves) using highly sensitive recording equipment attached to the scalp by fine electrodes. Purpose EEG is performed to detect abnormalities in the electrical activity of the brain which may help diagnose the presence and type of various brain disorders, to look for causes of confusion, and to evaluate head injuries, tumors, infections, degenerative diseases, and other disturbances that affect the brain.
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Electroencephalography, or EEG, is a neurological test that uses an electronic monitoring device to measure and record electrical activity in the brain. Purpose The EEG is a key tool in the diagnosis and management of epilepsy and other seizure disorders.
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Electroencephalography (EEG) is a neurological diagnostic procedure that records the changes in electrical potentials ( brain waves) in various parts of the brain. Purpose The EEG is an important aid in the diagnosis and management of epilepsy and other seizure disorders, as well as in the diagnosis of brain damage related to trauma and diseases such as strokes, tumors, encephalitis, and drug and alcohol intoxication.
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Electroencephalography, or EEG, is a neurological test that involves attaching electrodes to the head of a person to measure and record electrical activity in the brain over time. Purpose The EEG, also known as a brain wave test, is a key tool in the diagnosis and management of epilepsy and other seizure disorders.
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Electroencephalography, or EEG, is a neurological test that involves attaching electrodes to the head of a patient to measure and record electrical activity in the brain over time. Purpose The EEG, also known as a brain wave test, is a key tool in the diagnosis and management of epilepsy and other seizure disorders.
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The electroencephalography (EEG) unit is used to record the electrical output of the brain to produce a record called an electroencephalogram. Purpose Measurements taken by an electroencephalography unit are used to diagnose and classify disorders of the brain including seizures, encephalopathy, encephalitis, some psychiatric diseases, and brain death.
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Electroencephalography, or EEG, is a neurological test that involves attaching electrodes to the head of a person to measure and record electrical activity in the brain over time. Purpose The EEG, also known as a brain wave test, is a key tool in the diagnosis and management of epilepsy and other seizure disorders.
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An electrocardiogram (ECG) is a test that records the electrical activity of the heart. ECG is used to measure the rate and regularity of heartbeats as well as the size and position of the chambers, the presence of any damage to the heart, and the effects of drugs or devices used to regulate the heart (such as a pacemaker). See also stress test and Holter monitor (24h) .
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The electrocardiogram (ECG) displays important information about the heart, including the occurrence of a heart attack or lack of oxygen, whether conduction of the heartbeat is disturbed, or its rate or rhythm altered. It is useful as a rapid indicator of the diagnosis and it is easy, painless, and inexpensive to record.
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Detailed information on electrocardiogram, including how the EKG/ECG is performed and what happens after the procedure
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Electrocardiography is a commonly used, noninvasive procedure for recording electrical changes in the heart. The record, which is called an electrocardiogram (ECG or EKG), shows the series of waves that relate to the electrical impulses that occur during each beat of the heart.
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Did you know that electrical currents flow throughout your body? Because the strongest of these travels through your heart, doctors are able to monitor your heart by placing electrical sensors on the surface of your skin. They do this by giving you an electrocardiogram -- abbreviated either ECG or EKG (from the original German spelling of the word).
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The ECG (also known as EKG) is a test that records electrical signals from your heart onto a paper strip. The pattern of these signals can tell the doctor whether your heart is normal, under stress, or experiencing electrical problems, strain, or damage.
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Detailed information on an electrocardiogram (EKG) procedure, including how the procedure is performed, reasons for the procedure, and pre- and post-evaluation instructions
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The Harvard Health Letter celebrates its 30th anniversary this year. In the first of a series, the Health Letter takes a look back at three decades in medicine.
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A polysomnograph is a test of sleep cycles and stages through the use of continuous recordings of brain waves ( EEG ), electrical activity of muscles, eye movement (electrooculogram), breathing rate, blood pressure, blood oxygen saturation, and heart rhythm and direct observation of the person during sleep. There are two states of sleep: non-rapid eye movement (NREM) sleep and rapid eye movement (REM) sleep. REM sleep is associated with dreaming and paralysis of body muscles (except for the eye and diaphragm muscles). NREM sleep has four stages distinguishable by EEG waves. REM sleep alternates with NREM sleep approximately every 90 minutes. A person with normal sleep usually has four to five cycles of REM and NREM sleep during a night.
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The word polysomnography, derived from the Greek roots " poly, " meaning many, " somno, " meaning sleep, and " graphy " meaning to write, refers to multiple tests performed on patients while they sleep. Polysomnography is an overnight test to evaluate sleep disorders .
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What Is a Sleep Study?Do you often have problems sleeping?
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Polysomnography is a series of tests performed on patients while they sleep. Polysomnography is a comprehensive overnight procedure that evaluates sleep disorders .
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Polysomnography is a set of tests performed while a patient sleeps. It is done to diagnose and evaluate sleep disorders , and examines at a minimum brain wave patterns, the movements of both eyes, and the tone of at least one skeletal muscle.
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During a physical examination, a health care provider studies a patient's body to determine the presence or absence of physical problems. A typical physical examination includes: Inspection (looking at the body) Palpation (feeling the body with hands) Auscultation (listening to sounds) Percussion (producing sounds)
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